A better and more suitable track for the DML M4A1 Sherman -- you did not say which one! -- would be the T51 irreversible rubber block (smooth face) one for the early version (e.g. 75mm) or that track, the T48 rubber chevron (thick chevron), T-54E2 (steel chevron with gaps on the sides) or T49 (three bar steel cleat) track.
From the sounds of things you should have one of the earlier models with TWO sets of track pads in the box -- the British pattern chevrons you mentioned and one other (can't recall which one but it was a US type track). Ditch the British ones unless you want to do a Sherman II of some sort.
Cookie Sewell